Lock box bumper



FIG. 1 is a top, rear perspective view of a lock box bumper showing our new design;

FIG. 2 is a top, front perspective view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a reduced perspective view thereof, the knob, a portion of a door, and the lock box being shown on broken lines for illustrative purposes only. 

The ornamental design for a lock box bumper, as shown and described. 